#div1{
    width: 200px;
    height: 200px;
    background-color: #0cc;
    
    padding: 50px;	
    border:5px solid orange;
    
    margin: 100px;
}
#div2{
    width: 200px;
    height: 200px;
    background-color: #0cc;
    
    padding: 50px;	
    border:5px solid red;
    
    margin: 100px;
    
    /* 怪异模式 */
    box-sizing: border-box;
}